Explosion-proof flow meter

Abstract

The invention belongs to the technical field of flow meters, and discloses an explosion-proof flow meter which comprises a flow meter body and a plurality of placing supports, flange plates are fixedly arranged at the two ends of the flow meter body, and the placing supports are located at the bottom of the flow meter body and used for placing the flow meter body. The device comprises a plurality of placing supports, the centers of the tops of the placing supports are each provided with a first sliding way, the two symmetrical sides of the tops of the placing supports are each provided with a second sliding way, and the fixing mechanisms are located on the two symmetrical sides of the tops of the placing supports. According to the flow meter transportation device, a plurality of flow meter bodies can be conveniently and rapidly fixed, the stable transportation effect is achieved, and the problems that an existing flow meter is large in overall equipment weight in the transportation process and prone to being influenced by collision, vibration or falling in the transportation process, and the measurement precision and later use are influenced are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of flow meters, in particular to an explosion-proof flow meter. Background Art

[0002] With the development of industry, the requirements for the accuracy and range of flow measurement are becoming higher and higher, and the use of flow meters is becoming more and more extensive. Flow meters refer to instruments that measure the flow rate and the total amount of fluid in a selected time interval. Most of them are installed on gas pipelines to detect the gas flow flowing through the flow meter from the gas pipeline. Explosion-proof flow meters (such as electromagnetic flow meters, vortex flow meters, mass flow meters, etc.) are widely used in flammable and explosive environments such as petroleum, chemical industry, and natural gas. Their structure usually includes explosion-proof housing, sensor unit, signal processing module and mechanical connection components.

[0003] For example, the invention with publication number CN214793308U discloses an explosion-proof flowmeter, including a flowmeter body capable of detecting gas flow, a flowmeter tube provided on the flowmeter body and used for being aligned with a gas pipeline and detachably connected, a spiral tube is provided around the outer wall of the flowmeter tube, one end of the spiral tube is connected to a water pump, a water inlet of the water pump is connected to a water tank that circulates cooling water into the spiral tube through the water pump, an end of the spiral tube away from the water pump is connected to the water tank, and a water pump circulates the cooling water in the water tank into the spiral tube, so that the heat in the flowmeter tube can be transferred to the cooling water circulating in the spiral tube, so that the temperature of the flowmeter tube is reduced, and the possibility of the flowmeter tube and the flowmeter body bursting due to high temperature is reduced.

[0004] Existing explosion-proof flowmeters usually use high-strength metal materials (such as stainless steel or aluminum alloy) for their explosion-proof housings to ensure explosion-proof performance. The overall weight of the equipment is large and it is easily affected by collisions, vibrations or falls during transportation. On the one hand, the explosion-proof performance of explosion-proof flowmeters depends on the mechanical strength of the housing and the precise clearance of the joint surfaces (such as the flange sealing surface). If a violent collision or extrusion occurs during transportation, the housing may be deformed, making the joint surface unable to meet the explosion-proof standards. It is also easy for the flowmeter's sensors (such as electromagnetic coils, vortex probes) and precision electronic components (such as signal amplifiers, PCB boards) to become loose, break or drift in performance due to vibration or impact during transportation, affecting measurement accuracy. On the other hand, for batch transportation, multiple flowmeters are usually stacked or placed side by side. However, due to the irregular shape of the equipment (such as those with protruding flanges or junction boxes), they are prone to collisions when the transport vehicle is bumpy, resulting in surface scratches, thread damage or wear of the explosion-proof certification mark, affecting subsequent installation and use. Therefore, an explosion-proof flow meter is proposed to solve the problems raised in the background art. Summary of the Invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides an explosion-proof flow meter.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an explosion-proof flowmeter, comprising a flowmeter body and a plurality of placement brackets, wherein flanges are fixedly provided at both ends of the flowmeter body, the plurality of placement brackets are located at the bottom of the flowmeter body and are used to place the flowmeter body, a first slide is provided at the center of the top of the plurality of placement brackets, and a second slide is provided on both symmetrical sides of the top of the placement brackets; A fixing mechanism, the fixing mechanism being located on two symmetrical sides of the top of the plurality of placement brackets, and the fixing mechanism being used to quickly fix the flow meter body to be transported; Among them, the fixing mechanism includes two groups of multiple fixing clamps distributed in a circular array, a fixing plate located at a position away from each other of the two groups of fixing clamps, a driving plate arranged on the side of the fixing plate away from the fixing clamps, a gear located on one side of the driving plate and meshed with it, and a movable frame slidingly arranged inside the first slide, and the fixing clamps, fixing plates, driving plates, gears, and movable frames are all symmetrically distributed on both sides of the placement bracket.

[0007] Preferably, the inner walls of the multiple fixed clamps are made of rubber and abut against the outer wall of the flow meter body. The multiple fixed clamps are fixedly provided with a limiting plate on one side close to the fixed disk, and the limiting plate is L-shaped. The inner walls of the multiple limiting plates are fixedly provided with rubber pads, and the multiple rubber pads abut against the outer wall of the flange.

[0008] Preferably, a connecting rod is fixedly provided on one side of the plurality of limit plates away from the fixed clamping block, and a limiting boss is fixedly provided on one end of the plurality of connection rods close to the driving disk.

[0009] Preferably, the fixed disk is in a disc shape, and a plurality of movable grooves are provided on a side of the fixed disk close to the movable frame. The plurality of movable grooves are distributed in a circular array, and the plurality of movable grooves are in a trapezoidal shape on one side of the side wall of the fixed disk.

[0010] Preferably, a plurality of fixing posts distributed in a circular array are fixedly provided on a side of the fixing plate away from the fixing clamping block, and one end of the plurality of fixing posts away from the fixing plate is fixedly connected to the movable frame.

[0011] Preferably, a limiting groove is provided on the surface of the driving disk, and a plurality of teeth are fixedly provided on the side wall of the driving disk, the teeth are engaged with the gear, the limiting boss is clamped in the inside of the limiting groove and passes through the movable groove, and a control motor is fixedly provided at the central axis of the gear, and the control motor is fixedly connected to the movable frame.

[0012] Preferably, an adjustment mechanism is provided at the top center of the placement bracket, and the adjustment mechanism is used to adjust the distance between the two movable racks to achieve reasonable placement and retrieval of the flow meter body.

[0013] Preferably, the adjustment mechanism includes a driving rod, two connecting rods hinged to the two ends of the driving rod, an adjustment motor fixed at the bottom center of the placement bracket, and a protective component arranged at the top of the placement bracket, and the protective component is used to seal and protect the top of the flowmeter body.

[0014] Preferably, the driving rod is arranged as an oblique rod, and a rotating rod is arranged at the center of the driving rod. The rotating rod passes through the placement bracket and is rotatably connected to the placement bracket. The bottom of the rotating rod is fixedly connected to the adjustment motor, and the ends of the two connecting rods that are away from each other are respectively fixedly connected to the sides of the two moving racks that are close to each other.

[0015] Preferably, the protection assembly includes two groups of connecting frames fixedly arranged on both sides of the two movable frames and sealing boxes fixedly arranged on top of the two groups of connecting frames respectively; The connecting frame is L-shaped, and the bottom of the connecting frame is slidably engaged in the second slide. An arc groove is opened at the center of the two sealing boxes. The inner wall of the arc groove is made of rubber material, and the arc groove is engaged with the top outer wall of the flow meter body.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention facilitates the rapid fixation of multiple flow meter bodies and achieves the effect of stable transportation by setting up a placement rack, a fixed clamping block, a drive disk and other structures. During the transportation of the flow meter, the traditional packing method is prone to collision and damage of the equipment due to bumps, affecting the measurement accuracy. For this reason, a modular bracket system is adopted, and the independent clamping of the flow meter is achieved through an adjustable fixing mechanism. The device is equipped with a multi-station bracket, which can safely transport multiple devices at the same time. The adaptive clamping mechanism can automatically adjust the spacing according to flow meters of different specifications. The linked clamping device realizes multi-point synchronous fixation through rotation drive, ensuring that the equipment is stable and without displacement during transportation, effectively preventing accuracy damage caused by vibration, and solving the problem that the existing flow meter has a large overall equipment weight during transportation and is easily affected by collision, vibration or falling during transportation, affecting measurement accuracy and later use.

[0017] The present invention facilitates the clamping and securing of the flowmeter body by providing a fixed plate, a drive plate, and gears. This facilitates the securement of flowmeter bodies of varying sizes. A motor drives the gears to rotate, which in turn drives the meshing drive plate to rotate synchronously. A retaining groove on the drive plate controls the movement of a connecting rod via a latched boss. Constrained by the movable groove, the connecting rod can only slide in a specific direction. When the gears rotate in the forward direction, the drive plate drives the boss toward the outer end of the retaining groove, causing the connecting rod to expand outward, thereby pushing the fixed clamp and the retaining plate to open, facilitating flowmeter installation. Once installation is complete, the gears rotate in the reverse direction, driving the boss toward the inner end of the retaining groove. The connecting rod then contracts inward, forcing the fixed clamp against the outer wall of the flowmeter and the retaining plate to press against the flange for secure fixation. This entire process achieves rapid and precise clamping through mechanical linkage.

[0018] The present invention facilitates the fixation of flow meter bodies of different lengths and protects the flow meter bodies by arranging the cooperation of structures such as driving connecting rods and protective components. The central rotating rod is driven by a motor to rotate, which drives the connecting rods on both sides to produce angle changes. Since the connecting rods are rigidly connected to the movable frame and the movable frame is constrained by the guide rail, the movable frames on both sides can slide synchronously toward or in opposite directions, thereby adapting to the installation requirements of flow meters of different lengths. During the adjustment process, the protective component will move synchronously with the movable frame. The sealing box on the top is made of elastic rubber material. When closed, it can not only completely wrap the top of the flow meter, but also play a buffering and anti-collision role through deformation, thereby ensuring all-round protection during transportation. The entire system can achieve rapid adjustment and reliable protection through mechanical linkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structural coordination relationship between the placement rack and the flow meter of the present invention; Figure 3 Schematic diagram of the structural coordination relationship between the fixing mechanism and the adjusting mechanism of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the local structure at center A; Figure 5 This is a schematic diagram of the structural coordination relationship between the clamping block and the movable frame of the present invention; Figure 6 This is a schematic diagram of the structural matching relationship between the drive disc and the gear of the present invention; Figure 7 This is a schematic diagram of the structural coordination relationship between the movable frame and the adjustment mechanism of the present invention; Figure 8 It is a schematic diagram of the structural coordination relationship between the protection component and the driving rod of the present invention.

[0020] In the figure: 1. flowmeter body; 2. placement bracket; 21. first slide; 22. second slide; 3. fixing mechanism; 31. fixing clamp; 311. limit plate; 312. connecting rod; 3121. limit boss; 32. fixing plate; 321. movable groove; 322. fixing column; 33. driving plate; 331. limit slot; 332. teeth; 34. gear; 341. control motor; 35. movable frame; 4. adjusting mechanism; 41. driving rod; 42. connecting rod; 43. adjusting motor; 44. protective component; 441. connecting frame; 442. sealing box; 4421. arc groove. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 8 As shown, the present invention provides an explosion-proof flow meter, comprising a flow meter body 1 and a plurality of placement brackets 2, wherein flanges are fixedly provided at both ends of the flow meter body 1, the plurality of placement brackets 2 are located at the bottom of the flow meter body 1 and are used to place the flow meter body 1, a first slide 21 is provided at the center of the top of the plurality of placement brackets 2, and a second slide 22 is provided on both symmetrical sides of the top of the placement bracket 2; The fixing mechanism 3 is located on both sides of the top of the plurality of placement brackets 2 and is used to quickly fix the flow meter body 1 to be transported; Among them, the fixing mechanism 3 includes two groups of multiple fixing clamps 31 distributed in a circular array, a fixing plate 32 located at a position away from each other on the side of the two groups of fixing clamps 31, a driving plate 33 arranged on the side of the fixing plate 32 away from the fixing clamps 31, a gear 34 located on one side of the driving plate 33 and engaged with it, and a movable frame 35 slidingly arranged inside the first slide 21. The fixing clamps 31, the fixing plates 32, the driving plates 33, the gears 34, and the movable frame 35 are all symmetrically distributed on both sides of the placement bracket 2.

[0023] Adopting the above scheme: when the flowmeter body 1 is used, it is mostly necessary to transport it to the place of use by a transport vehicle. Most of the existing transport devices directly place multiple flowmeter bodies 1 inside the box for transportation. During transportation, it is easy to cause bumps due to uneven road sections, causing damage to internal parts of the flowmeter body 1 and uneven flanges, which in turn affects the accuracy of the flowmeter body 1 in the later use and causes damage to the device. Therefore, it is necessary to use a placement bracket 2 to achieve fixed placement of the flowmeter body 1. At the same time, multiple placement brackets 2 are equipped to achieve simultaneous transportation of multiple flowmeter bodies 1 to avoid collision damage between the flowmeter bodies 1 and the flowmeter bodies 1 caused by stacking. When the flowmeter body 1 is placed on the placement bracket 2, the flowmeter body 1 can be quickly fixed by using the fixing mechanism 3, and the spacing between the fixing mechanisms 3 on both sides can be adjusted with the adjustment mechanism 4 to adapt to and fix flowmeter bodies 1 of different lengths. When fixed, the driving disk 33 drives multiple fixing clamps 31 to open and close at the same time to achieve clamp fixation of the flowmeter body 1, thereby improving stability during transportation.

[0024] like Figures 5 and 6 As shown, the inner walls of the multiple fixing clamps 31 are made of rubber and abut against the outer wall of the flowmeter body 1. A limit plate 311 is fixedly provided on one side of the multiple fixing clamps 31 close to the fixed disk 32. The limit plate 311 is L-shaped. Rubber pads are fixedly provided on the inner walls of the multiple limit plates 311. The multiple rubber pads abut against the outer wall of the flange. Connecting rods 312 are fixedly provided on one side of the multiple limit plates 311 away from the fixing clamps 31. A limiting boss 3121 is fixedly provided on one end of the multiple connecting rods 312 close to the driving disk 33. The fixed plate 32 is disc-shaped. A plurality of movable grooves 321 are formed on a side of the fixed plate 32 close to the movable frame 35. The plurality of movable grooves 321 are arranged in a circular array. The plurality of movable grooves 321 are arranged in a trapezoidal shape on the side wall of the fixed plate 32. A plurality of fixed posts 322 are fixedly provided on a side of the fixed plate 32 away from the fixed clamping block 31. The ends of the plurality of fixed posts 322 away from the fixed plate 32 are fixedly connected to the movable frame 35. A limiting groove 331 is provided on the surface of the driving disk 33, and a plurality of teeth 332 are fixedly provided on the side wall of the driving disk 33. The teeth 332 are engaged with the gear 34. The limiting protrusion 3121 is clamped in the inside of the limiting groove 331 and passes through the movable groove 321. A control motor 341 is fixedly provided at the central axis of the gear 34, and the control motor 341 is fixedly connected to the movable frame 35.

[0025] The above scheme is adopted: when the fixing mechanism 3 is used for fixing, the gear 34 is driven by the control motor 341 to rotate forward and reverse, thereby driving the driving plate 33 engaged therewith to rotate forward and reverse synchronously. During the rotation of the driving plate 33, the plurality of limiting protrusions 3121 engaged with the limiting grooves 331 are driven to rotate synchronously. Since the limiting protrusions 3121 are connected to the connecting rod 312 and the two are stuck in the moving grooves 321, they are limited by the moving grooves 321 and can only slide along the moving grooves 321. Therefore, when the gear 34 drives the driving plate 33 to rotate forward, the limiting protrusions 3121 engaged inside will be driven to move to the limiting grooves The grooves 331 are away from each other at one end, thereby causing the connecting rod 312 to expand outward along the movable groove 321, thereby driving the limit plate 311 and the fixed clamping block 31 to open synchronously, thereby facilitating their clamping on the flow meter body 1. After the clamping is completed, the driving disk 33 is reversed by the gear 34, so that the limit boss 3121 moves to the end where the limit grooves 331 are close to each other, thereby driving multiple connecting rods 312 to approach each other, so that the fixed clamping block 31 and the limit plate 311 gather together, the inner wall of the limit plate 311 is tightly against the flange, and the inner wall of the fixed clamping block 31 is against the outer wall of the flow meter body 1, thereby achieving rapid fixation.

[0026] like Figure 7 As shown, an adjustment mechanism 4 is provided at the top center of the placement bracket 2, and the adjustment mechanism 4 is used to adjust the distance between the two movable racks 35 to achieve reasonable placement and removal of the flow meter body 1; The adjusting mechanism 4 includes a driving rod 41, two connecting rods 42 hinged at both ends of the driving rod 41, an adjusting motor 43 fixedly arranged at the bottom center of the placement bracket 2, and a protective component 44 arranged on the top of the placement bracket 2. The protective component 44 is used to seal and protect the top of the flowmeter body 1. The driving rod 41 is an inclined rod. A rotating rod is provided at the center of the driving rod 41. The rotating rod passes through the placement bracket 2 and is rotatably connected to the placement bracket 2. The bottom of the rotating rod is fixedly connected to the adjusting motor 43. The ends of the two connecting rods 42 that are away from each other are respectively fixedly connected to the sides of the two movable frames 35 that are close to each other.

[0027] The above scheme is adopted: the adjustment mechanism 4 is used to adjust the distance between the movable frames 35 on both sides, so as to facilitate the placement of the flow meter body 1 between the driving disks 33 on both sides, and also facilitate the rapid fixation of flow meter bodies 1 of different lengths. Specifically, the adjusting motor 43 is used to drive the driving rod 41 at the center to rotate forward and reverse, thereby driving the connecting rod 42 connected thereto to cause an angular displacement. Since the connecting rod 42 is fixedly connected to the movable frame 35, the movable frame 35 is limited by the first slide 21. Therefore, during the rotation process, the movable frames 35 on both sides will be driven to slide along the first slide 21, so that the two are closer to or farther away from each other. During the adjustment process, the protective component 44 can be used to achieve sealing of the top of the flow meter body 1.

[0028] like Figure 8 As shown, the protection assembly 44 includes two sets of connecting frames 441 fixedly arranged on both sides of the two moving frames 35 and sealing boxes 442 fixedly arranged on the top of the two sets of connecting frames 441 respectively; The connecting frame 441 is L-shaped, and the bottom of the connecting frame 441 is slidably engaged in the second slide 22. An arc groove 4421 is opened at the center of the two sealing boxes 442. The inner wall of the arc groove 4421 is made of rubber material, and the arc groove 4421 is engaged with the top outer wall of the flow meter body 1.

[0029] The above solution is adopted: the top of the flow meter body 1 is protected by the cooperation of the connecting frame 441 and the sealing box 442 to avoid collision on the top during transportation. Specifically, when the movable frames 35 on both sides are driven to approach each other, the connecting frames 441 on both sides will be driven to approach each other synchronously, so that the sealing box 442 on the top is close to each other to clamp the top of the flow meter body 1. Since the interior of the sealing box 442 is made of rubber, it is squeezed and deformed during the clamping process, which can achieve the effect of a protective shock-absorbing pad.

[0030] The working principle and usage process of the present invention are as follows: When using the flow meter fixing and transporting device, the operator first needs to start the adjustment motor 43, which drives the drive rod 41 to rotate via the motor shaft. The rotation of the drive rod 41 will simultaneously drive the connecting rod 42 rigidly connected to it to rotate. Because the connecting rod 42 is connected to the movable frames 35 on both sides by an articulated connection, this motion conversion will convert the rotational motion into linear motion, causing the movable frames 35 on both sides to perform linear displacement toward or away from each other on the guide rails. In actual operation, when it is necessary to load the flow meter, the movable frames 35 should be adjusted to a position away from each other to reserve sufficient operating space for subsequent flow meter installation; After the adjustment is completed, the operator can place the flowmeter body 1 steadily on the dedicated positioning platform between the fixing mechanisms 3. At this time, the core components of the fixing mechanisms begin to play a role: the precision transmission system composed of the drive disk 33 and the gear 34 will work together to drive multiple connecting rods 312 to move radially through gear meshing. In the initial state, the connecting rod 312 will be adjusted to the maximum open position, so that the fixed clamp 31 connected to it will be in a fully open state, forming a sufficiently large clamping space to facilitate the placement of the flowmeter; when the flowmeter is in place, the operator needs to start the drive rod 41 again to drive the moving frames 35 on both sides to move toward each other. During this process, the two drive disks 33 will move toward the center from both sides at the same time until their inner contact surfaces are completely in contact with the end faces on both sides of the flowmeter flange. To ensure positioning accuracy, the contact surface of the drive disk 33 is usually designed with anti-slip grooves or elastic buffer layers, which can ensure close contact and avoid damage to the flange surface. After completing the initial positioning, it enters the final fixing stage. At this time, the gear 34 starts to rotate under the action of the driving mechanism, driving the multiple connecting rods 312 inside the driving disk 33 to shrink inward synchronously. This multi-link linkage design ensures that each fixed clamp 31 can be evenly and synchronously gathered toward the center. The inner side of the fixed clamp 31 is usually designed with a curved surface that matches the outer contour of the flowmeter. When it is completely in contact with the outer wall of the flowmeter body 1, a uniform envelope fixation will be formed. At the same time, the limit plate 311 set on the fixed clamp 31 will accurately clamp the outer edge of the flange to form a double positioning effect. This combined fixing method can prevent the flowmeter from axial movement and radial rotation, ensuring absolute stability during transportation.

[0031] The innovation of this device lies in the modular design concept. It is equipped with multiple independently working placement brackets 2 and fixing mechanisms 3. Each fixing unit can be adjusted individually, so multiple flow meter bodies 1 of different specifications can be fixed at the same time. Reasonable spacing is maintained between the brackets to ensure both operating space and maximize the use of transportation space. When all flow meters are fixed in place, the entire device can be transported as a whole, which significantly improves the transportation efficiency of batch flow meters.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof flow meter, characterized in that: include: A flow meter body (1) and a plurality of placement brackets (2), wherein flanges are fixedly provided at both ends of the flow meter body (1), the plurality of placement brackets (2) are located at the bottom of the flow meter body (1) and are used to place the flow meter body (1), a first slideway (21) is provided at the center of the top of the plurality of placement brackets (2), and a second slideway (22) is provided on both symmetrical sides of the top of the placement bracket (2); A fixing mechanism (3), the fixing mechanism (3) being located on two symmetrical sides of the top of the plurality of placement brackets (2), and the fixing mechanism (3) being used to quickly fix the flow meter body (1) to be transported; The fixing mechanism (3) comprises two groups of multiple fixing clamps (31) distributed in a circular array, a fixing disk (32) located at a position away from each other on one side of the two groups of fixing clamps (31), a driving disk (33) arranged on the side of the fixing disk (32) away from the fixing clamps (31), a gear (34) located on one side of the driving disk (33) and meshed with the driving disk (33), and a moving frame (35) slidably arranged inside the first slideway (21), wherein the fixing clamps (31), the fixing disk (32), the driving disk (33), the gear (34), and the moving frame (35) are all symmetrically distributed on both sides of the placement bracket (2).

2. The explosion-proof flow meter according to claim 1, characterized in that: The inner walls of the plurality of fixed clamps (31) are all made of rubber and abut against the outer wall of the flow meter body (1); a limiting plate (311) is fixedly provided on one side of the plurality of fixed clamps (31) close to the fixed disk (32); the limiting plate (311) is L-shaped; rubber pads are fixedly provided on the inner walls of the plurality of limiting plates (311); and the plurality of rubber pads abut against the outer wall of the flange.

3. The explosion-proof flow meter according to claim 2, characterized in that: A connecting rod (312) is fixedly provided on one side of the plurality of limiting plates (311) away from the fixed clamping block (31), and a limiting boss (3121) is fixedly provided on one end of the plurality of connecting rods (312) close to the driving disk (33).

4. The explosion-proof flow meter according to claim 1, characterized in that: The fixed disk (32) is in the shape of a disk. A plurality of movable grooves (321) are provided on a side of the fixed disk (32) close to the movable frame (35). The plurality of movable grooves (321) are distributed in a circular array. The plurality of movable grooves (321) are in the shape of a trapezoid on one side of the side wall of the fixed disk (32).

5. The explosion-proof flow meter according to claim 1, characterized in that: A plurality of fixed columns (322) distributed in a circular array are fixedly provided on one side of the fixed disk (32) away from the fixed clamping block (31), and one end of the plurality of fixed columns (322) away from the fixed disk (32) is fixedly connected to the movable frame (35).

6. The explosion-proof flow meter according to claim 3, characterized in that: A limiting groove (331) is provided on the surface of the driving disc (33), a plurality of teeth (332) are fixedly provided on the side wall of the driving disc (33), the teeth (332) are engaged with the gear (34), the limiting boss (3121) is clamped inside the limiting groove (331) and passes through the movable groove (321), a control motor (341) is fixedly provided at the central axis of the gear (34), and the control motor (341) is fixedly connected to the movable frame (35).

7. The explosion-proof flow meter according to claim 1, characterized in that: An adjustment mechanism (4) is provided at the top center of the placement bracket (2), and the adjustment mechanism (4) is used to adjust the distance between the two movable racks (35) to achieve reasonable placement and removal of the flow meter body (1).

8. The explosion-proof flow meter according to claim 7, characterized in that: The regulating mechanism (4) comprises a driving rod (41), two connecting rods (42) hinged to the two ends of the driving rod (41), an regulating motor (43) fixedly arranged at the bottom center of the placement bracket (2), and a protective component (44) arranged on the top of the placement bracket (2), wherein the protective component (44) is used to seal and protect the top of the flow meter body (1).

9. The explosion-proof flow meter according to claim 8, characterized in that: The driving rod (41) is arranged as an oblique rod. A rotating rod is arranged at the center of the driving rod (41). The rotating rod passes through the placement bracket (2) and is rotationally connected to the placement bracket (2). The bottom of the rotating rod is fixedly connected to the adjustment motor (43). The ends of the two connecting rods (42) that are away from each other are respectively fixedly connected to the sides of the two moving racks (35) that are close to each other.

10. The explosion-proof flow meter according to claim 8, characterized in that: The protection assembly (44) includes two groups of connecting frames (441) fixedly arranged on both sides of the two movable frames (35) and sealing boxes (442) fixedly arranged on top of the two groups of connecting frames (441); The connecting frame (441) is L-shaped, and the bottom of the connecting frame (441) is slidably engaged in the second slideway (22). The centers of the two sealing boxes (442) are each provided with an arc groove (4421), the inner wall of the arc groove (4421) is made of rubber material, and the arc groove (4421) is engaged with the top outer wall of the flow meter body (1).

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